Download Installation & Service Manual

Installation & Service
Manual
NNG90IS
NNG90OS
NNG CORNER (WEDGE) CASES
INSIDE/OUTSIDE SELF-SERVE CHEESE/DELI CORNER MERCHANDISERS
Medium Temperature Refrigerated Corner Display Cases
This manual has been designed to be used in conjunction with the
General (UL/NSF) Installation & Service Manual.
Save the Instructions in Both Manuals for Future Reference!!
This merchandiser conforms to the American National Standard Institute & NSF International Health and Sanitation standard ANSI/NSF 7 - 2003.
PRINTED IN Specifications subject to REPLACES
IN U.S.A.
change without notice. EDITION
1/06
ISSUE
DATE
4/08
Tyler Refrigeration * Niles, Michigan 49120
PART
NO.
9037175
REV.
C
NNG CORNER CASES
CONTENTS
Page
Specifications
NNG Corner Case Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Line Sizing Requirements . . . . . (See General-UL/NSF I&S Manual)
Pre-Installation Responsibilities . . . . . (See General-UL/NSF I&S Manual)
Installation Procedures
Carpentry Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Case Line-Up and Pull-Up Locations . . . . . . . . . . . . . . . . . . . . . . . . 5
Trim & NSF Thermometer Installation . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Case Fan Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Plumbing Procedures . . . . . . . . (See General-UL/NSF I&S Manual)
Refrigeration Procedures . . . . . (See General-UL/NSF I&S Manual)
Defrost Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Defrost Control Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NNGIS/NNGOS Dom. & Exp. (50Hz) Corner Case Circuits . . . . . 7
Cleaning and Sanitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Component Removal and Installation Instructions for Cleaning
Lower Trays
......................................... 8
Front Air Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rear Air Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Front Lower Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Front Upper Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cleaning Instructions . . . . . . . . (See General-UL/NSF I&S Manual)
Service Instructions
Preventive Maintenance . . . . . . (See General-UL/NSF I&S Manual)
Connecting the Refrigeration Piping and Components . . . . . . . . 9
Front Glass Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Anti-Sweat Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Discharge Grid Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fan Blade and Motor Replacement (See Gen.-UL/NSF I&S Manual)
Color Band & Bumper Replacement (See Gen.-UL/NSF I&S Man.)
Parts Information
Cladding and Optional Trim Parts List . . . . . . . . . . . . . . . . . . . . . 11
Operational Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TYLER Warranty . . . . . . . . . . . . . . . . . (See General-UL/NSF I&S Manual)
The following Medium Temperature Self-Service Cheese/Deli Wedge Merchandiser models are
covered in this manual:
MODEL
DESCRIPTION
NNG90IS
NNG90OS
90° INSIDE GLASS FRONT CHEESE/DELI WEDGE MERCHANDISERS
90° OUTSIDE GLASS FRONT CHEESE/DELI WEDGE MERCHANDISERS
Page 2
April, 2008
Installation & Service Manual
NNG CORNER CASES
SPECIFICATIONS
NNG Self-Service Medium Temp Cheese/Deli Wedge Specifications
April, 2008
Page 3
NNG CORNER CASES
Page 4
April, 2008
Installation & Service Manual
NNG CORNER CASES
INSTALLATION PROCEDURES
WARNING
Corner cases are not intended as stand
alone commercial refrigerated merchandisers. They must be bolted to the adjoining
case(s) to provide stability. Failure to do
so could result in product damage and/or
possible personal injury.
Carpentry Procedures
Case Line-up and Pull-Up Locations
Before starting the case line-up, review the
store layout floorplans and survey the areas
where case line-ups are going to be installed.
WARNING
Corner cases can be very heavy and
possibly top heavy before they are
secured in a line-up. Always use a lifting
device to remove case from skid and two
or more people to move and position case.
Improper handling of these cases could
result in product damage and/or personal
injury.
3. Position corner case at end of case
line-up so front bumpers and case
pull-ups line up.
4. Adjust legs inserts in bottom of legs (1),
up to 1 1/2”, to align and level pull-ups
and bumpers. Push corner case tight
against case line-up.
CAUTION
Do not drill or use other holes through the
case end for pull-ups. This may deform
the case ends and could cause joint leaks
and/or poor refrigeration.
1. Apply two heavy beads of caulking
compound from the Filler Kit to the ends
of the adjoining cases at dotted (. . .) and
dashed (- - -) lines. Proper caulking
provided good case refrigeration and
sanitation.
5. Secure corner case to case line-up by
installing pull-up bolts and mounting
hardware (2) at pull-up locations (A & B).
NOTE: Do not tighten any pull-up hardware until all of it has been installed.
Tighten all pull-up hardware equally
starting at point A and finishing at point B.
Do not overtighten.
6. Install lower front cladding support (3) to
foam body with screw.
7. Install lower front cladding (4) and secure
to upper front cladding and lower front
cladding support (3) with screws.
2. Using an appropriate lifting device, lift
corner case from skid and install four pipe
legs. Lower corner case to floor.
June, 2004
Page 5
NNG CORNER CASES
Trim & NSF Thermometer Installation
Case Fan Circuit
This circuit is to be supplied by an uninterrupted, protected 120V circuit. The case fan
circuit is not cycled during defrost on any of
these models.
Anti-Sweat Circuit
A discharge air anti-sweat heater is located in
the bull nose. It is wired directly to the main
power supply so it can operate at all times.
Defrost Information
See “General-UL/NSF I&S Manual” for
operational descriptions for Off Time
defrost control.
Defrost Control Chart
The joint trim and mounting hardware are
shipped loose. Trim includes bumper joint
trim (1), front upper cladding joint trim (2),
front lower cladding joint trim (3) and kickplate
joint trim (4).
The NSF product thermometer and bracket
assembly (5) is shipped loose with the case.
After removing the thermometer and bracket
assembly from the shipping packaging,
position it on the inside of the front bottom
left cutout in the partition. Secure bracket to
partition with two screws.
Electrical Procedures
Electrical Considerations
CAUTION
Make sure all electrical connections at
components and terminal blocks are tight.
This will prevent burning of electrical
terminals and/or premature component
failure.
Defrost
Type
Off Time
Defrost
Defrosts Duration
Per Day
(Min)
6
28
Term.
Temp.
-----
WIRING DIAGRAMS
ELECTRICIAN NOTE - OVERCURRENT
PROTECTION
120V circuits should be protected by 15 or 20 Amp
devices per the requirements noted on the cabinet
nameplate or the National Electrical Code, Canadian
Electrical Code - Part 1, Section 28. 208V defrost
circuits employ No. 12 AWG field wire leads for field
connections. On remote cases intended for end to
end line-ups, bonding for ground may rely upon the
pull-up bolts.
The following wiring diagram on page 7 will
cover all the NNG IS and NNG OS corner
case circuits.
NOTE
The electrical components are located in the
electrical terminal box at the right front of
the case, behind the lower front cladding.
Page 6
April, 2008
NNG Domestic & Export (50 Hz) Corner Case Circuits
January, 2006
Page 7
NNG CORNER CASES
CLEANING AND SANITATION
Front Upper Cladding
Component Removal and
Installation Instructions for
Cleaning
1. Remove front lower cladding. See this
page.
Lower Trays and Screens
1. Remove product from the case interior.
3. Grasp and lift out each lower tray or
screen from the bottom of the case.
4. After cleaning, replace in reverse order.
Front Air Ducts
1. Remove lower trays or screens, see this
page.
2. Lift out front air duct sections.
3. After cleaning, replace in reverse order.
Rear Air Ducts
1. Remove lower trays or screens, see this
page.
2. Remove screws, bumper joint trim and
upper cladding joint trim from front
corners of the case.
3. Remove color band, bumper and
bumper retainer from the case. See
“General-UL/NSF I&S Manual”.
NOTE
Lower cladding support brackets will come
off when bottom screws are removed from
front upper cladding.
4. Remove screws from bottom and sides
of front upper cladding and remove lower
cladding support brackets and front
upper cladding.
5. After cleaning, replace lower cladding
support brackets, front upper cladding
and remaining front components in the
reverse order.
2. Remove mounting screws from rear air
duct.
3. Lift out rear air duct sections.
4. After cleaning, replace in reverse order.
Front Lower Cladding
1. Remove screws, kickpate corner trim and
lower cladding corner trim.
2. Remove the front kickplate.
3. Remove bottom screws and pull down
front lower cladding to clear top tabs
from front upper cladding. Remove front
lower cladding from case.
4. After cleaning, replace front lower
cladding by inserting top tabs in front
upper cladding and secure it with bottom
screws. Replace front kickplate.
Page 8
April, 2008
Installation & Service Manual
SERVICE INSTRUCTIONS
NNG CORNER CASES
Front Glass Replacement
See “General-UL/NSF I&S Manual” for fan
blade & motor and color band & bumper
replacement instructions.
Connecting the Refrigeration
Piping and Components
WARNING
Be sure to position a flame and heatresistent shield over the bottom of the
case liner. Heat from brazing could
damage the liner and/or cause personal
injury or death from fire.
1. Remove screws and refrigeration piping
cover from the left bottom of the case.
2. Position loose refrigeration piping and/or
optional valves between the open lines in
the bottom and upright of the case.
NOTE
• Make sure all sensor and thermostat
wires are clear of areas being heated.
• Mount all refrigeration lines off the floor
to allow for cleaning access.
3. Apply flux to all joint ends. Starting at one
end, thoroughly heat each new pipe joint
and braze it together. Repeat this process
until all new pipe joints have been brazed.
4. After piping has cooled, route and connect thermostat and sensor wires through
openings in the bottom of the case.
1. Remove screw (1) and glass joint trim (2)
from both joints of the broken glass (3).
2. Remove screws (4) and glass trim rail (5)
from top of glass (3).
3. Loosen rear retainer (6) and remove
broken glass (3) from glass retainer
assembly (7).
4. Apply sealant tape (8) to top and bottom
edge of new glass (3).
5. Position new glass (3) in glass retainer
assembly (7) and secure by tightening
rear retainer (6).
6. Install glass trim rail (5) with screws (4)
over top edge of new glass (3).
7. Install glass joint trim (2) with screw (1)
over the joint areas of glass (3).
January, 2006
Page 9
NNG CORNER CASES
Anti-Sweat Heater Replacement
(Discharge Air)
Discharge Grid Replacement
WARNING
Shut off or disconnect power supply to
case before changing an anit-sweat.
Electrical power from wire ends could
damage other components and/or cause
personal injury or death.
1. Remove screws (1) lower grid retainer (2)
and discharge grid (3).
2. Replace discharge grid (3) and lower grid
retainer (2) and secure with screws (1).
1. Remove screws (1) and card molding (2)
from front of rear riser.
2. Remove screws (3), upper rear riser trim
(4) and insulation (5) from top of rear riser.
3. Disconnect or cut the defective anti-sweat
wire (6) from case wires.
4. Remove the aluminum tape and defective
anti-sweat wire (6) from the lower riser
trim (7).
5. Position new anti-sweat wire (6) on the
lower riser trim (7) and secure with
aluminum tape.
6. Connect or splice the new anti-sweat wire
(6) to the case wires.
7. Position the insulation (5) on the lower
riser trim (7).
8. Install the upper rear riser trim (4) on top
of rear riser with screws (3).
9. Install card molding (2) on front of rear
riser with screws (1).
10. Restore electrical power to case.
Page 10
April, 2008
Installation & Service Manual
NNG CORNER CASES
PARTS INFORMATION
Cladding and Optional Trim Parts List
Item Description
90°IS
90°OS
1
Upper Rear Panel
9455130
9450692
2
Card Molding
9455171
9450671
3
Bumper Joint Trim
4
Color Band, Painted
5
Bumper
6
Bumper Retainer
9452901
9450388
7
Upr. Front Cladding Joint Trim, RH
9453655
9450863
Upr. Front Cladding Joint Trim, LH
9453651
9450864
8
Upper Front Cladding
9452890
9450336
9
Lwr. Front Cladding Joint Trim, Std.
-----
9450837
Lwr. Front Cladding Joint Trim, Opt.
-----
9450836
Lower Front Cladding, Std.
9452889
9450335
Lower Front Cladding, Opt.
-----
9450813
Lwr. Front Cladding Support, Std.
9451029
9451029
Lwr. Front Cladding Support, Opt.
-----
9451030
10
11
--- color per order --9455154
9450675
--- color per order ---
12
Kickplate Joint Trim
9453645
9451025
13
Kickplate Assembly, Std.
9452885
9450315
14
Pipe Leg, Std. (1.5” X 9.75”)
9024894 (4)
9024894 (4)
Pipe Leg, Opt. (1.5” X 6.00”)
9024893 (4)
9024893 (4)
Electrical Box Cover, Painted
5968093
5968093
9024814 (2)
9024814 (2)
15
Screw
16
NSF Product Thermometer
5967100
5967100
17
Opt. Rear Base Close-off for 52CH
9452963
9450316
Opt. Rear Base Close-off for 48CH
-----
9450369
January, 2006
Page 11
NNG CORNER CASES
Operational Parts List
Case Usage
Domestic
Domestic
115 Volt 60 Hertz
115 Volt 60 Hertz
Case Size
90°IS
90°OS”
Fan Motor
5125532
5 Watt
5125532
5 Watt
Fan Motor Brackets
5213132
5213132
Fan Bracket Plate
9041077
9041077
Fan Blades
(6” 21° 5B)(NNG90IS)
5105621
-----
-----
9450091
Anti-Sweat Heater (Discharge Air)
9403434
9403434
NSF Product Thermometer
5967100
5967100
Electrical Circuit
(6” 35° 5B)(NNG90OS)
For information on operational parts not listed above contact the TYLER Service
Parts Department.
Page 12
April, 2008